type Manager … type simpleConfigMapManager … // NewSimpleConfigMapManager creates a new ConfigMapManager instance. func NewSimpleConfigMapManager(kubeClient clientset.Interface) Manager { … } func (s *simpleConfigMapManager) GetConfigMap(namespace, name string) (*v1.ConfigMap, error) { … } func (s *simpleConfigMapManager) RegisterPod(pod *v1.Pod) { … } func (s *simpleConfigMapManager) UnregisterPod(pod *v1.Pod) { … } type configMapManager … func (c *configMapManager) GetConfigMap(namespace, name string) (*v1.ConfigMap, error) { … } func (c *configMapManager) RegisterPod(pod *v1.Pod) { … } func (c *configMapManager) UnregisterPod(pod *v1.Pod) { … } func getConfigMapNames(pod *v1.Pod) sets.Set[string] { … } const defaultTTL … // NewCachingConfigMapManager creates a manager that keeps a cache of all configmaps // necessary for registered pods. // It implement the following logic: // - whenever a pod is create or updated, the cached versions of all configmaps // are invalidated // - every GetObject() call tries to fetch the value from local cache; if it is // not there, invalidated or too old, we fetch it from apiserver and refresh the // value in cache; otherwise it is just fetched from cache func NewCachingConfigMapManager(kubeClient clientset.Interface, getTTL manager.GetObjectTTLFunc) Manager { … } // NewWatchingConfigMapManager creates a manager that keeps a cache of all configmaps // necessary for registered pods. // It implements the following logic: // - whenever a pod is created or updated, we start individual watches for all // referenced objects that aren't referenced from other registered pods // - every GetObject() returns a value from local cache propagated via watches func NewWatchingConfigMapManager(kubeClient clientset.Interface, resyncInterval time.Duration) Manager { … }